The bundle consists of four separate processors, that work as DirectX and VST plugins for Windows. - 4Front XLimiter
- 4Front Auxiter
- 4Front Sand Brush
- 4Front Contour Max
** XLimiter **
Gentle and soft brickwall limiter processor. Can be used also to compress solo and vocal tracks. May also work as de-esser. ** Auxiter **
High frequency refresh plugin, similar to aural plugins from other brands. ** Sand Brush ** Complete regeneration of high frequency content, basing on the existing partials. The plugin is nice to apply on hihats and other percussive sounds with high frequency content, also on the other tracks to add "sand". ** Contour Max **
The plugin is designed to change the basic frequency contour of a sound track, or the overall frequency balance of a master. | 
